This is a bit of an unfounded fear of mine (as in, I don't know if legitimate or not), with regards to the widening income gap. How realistic would the following scenario be:
A future where a small group of companies/funds/individual own a large fraction of the domestic real-estate. Some unspoken price-fixing, and the result is that it's impossibly expensive for anyone to purchase property and people are slaves to price-gauging on rentals to a point that it just pushes the income gap to the very extremes.